diff --git a/package-lock.json b/package-lock.json
index 1e0e781..16ec6bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,9 +20,9 @@
       }
     },
     "@types/chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.3.tgz",
+      "integrity": "sha512-VRw2xEGbll3ZiTQ4J02/hUjNqZoue1bMhoo2dgM2LXjDdyaq4q80HgBDHwpI0/VKlo4Eg+BavyQMv/NYgTetzA==",
       "dev": true
     },
     "@types/mocha": {
diff --git a/package.json b/package.json
index 165e4bc..71a8b0e 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "homepage": "https://github.com/dotmesh-io/dotscience-typescript-sdk#readme",
   "devDependencies": {
-    "@types/chai": "4.2.0",
+    "@types/chai": "4.2.3",
     "@types/mocha": "5.2.7",
     "@types/node": "12.7.2",
     "chai": "4.2.0",